Electricity and Control January 2020

DRIVES, MOTORS + SWITCHGEAR

efficiency of industrial (and other) systems. Studies suggest that industry accounts for almost half of global energy consumption – followed by commercial and residential use. The EC’s regulation 640/2009 already requires that all electric motors operated from a variable speed drive or inverter must adhere to a minimum of IE2 to be eligible for sale. Fixed-speed applications must meet a minimum of IE3 to comply. Where a motor does not operate at its nominal torque and speed, the variable speed drive presents a significant opportunity for energy optimisation. In addition, the greater the range of speed variation the better the PDS efficiency. Using WEG’s IE2 motors with any WEG variable speed drive can achieve an efficiency classification of IES2. However, it is important to note that by using other WEG lines of motors with the right drive, much higher levels of efficiency can be reached. WEG has a complete line of variable speed drives which exceed the IE2 requirements outlined in the IEC 61800-9 standard. When combined with its robust and reliable motor line, the products create an integrated solution for diverse applications. Easy identification in complex electrical panels Brady South Africa offers a range of reliable, industrial grade labels that provide clear and immediate visibility in complex electrical panels for cable, product and safety identification. With professional labels and label printers from Brady, users can easily and quickly meet any customer’s identification requirements. Brady’s in-house research and development teams design the labels to remain legible and stay attached when exposed to a combination of elements, including ultraviolet light, humidity, moisture, gas and others. Brady also offers labels that comply with marine, aviation and defence requirements. Technical data sheets are available to provide insight into label test results. The range of more than 5 000 attractive labels enables panel builders to provide immediate insight in the most complex panels. With crisp print, extensive colour and size variation, with or without raised profile, Brady labels can be used to identify safety risks, cables or components in electrical panels. Such components may range from controllers, I/O modules, power supplies, circuit breakers, terminal and distribution blocks, to relay modules, starters, heavy-duty connectors and more.

At a glance ■ The IEC 61800-9 standard gives manufacturers a clear framework for grading a complete motor system. ■ Using the Extended Product (EP) approach, the standard considers the efficiency of the motor system as a whole, comprising the motor, the basic drive module, and the complete drive module.Together, these make up the power drive system, which also includes switchgear and controls.

Power drive system torque, speed and efficiency.

DRIVES, MOTORS + SWITCHGEAR : PRODUCT NEWS

The electrical panel labels can be printed quickly, on site, using one of the Brady range of label printers. All the user needs is a few label rolls and a suitable label printer to have a vast variety of panel labels available. For additional flexibility, most labels are available both

on benchtop and portable print systems. Brady Workstation apps make it easy for the user to design, serialise and print the labels needed. For more information contact Brady South Africa. Tel: +27 (0)11 704 3295, email: info_africa@bradycorp.com

Brady South Africa supplies a wide range of industrial grade labels for clear identification of components and cables in complex electrical panels.

Electricity + Control

JANUARY 2020

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